SPONSORED LINKS

OBDport has no power

Tiny
DENALIWONTSTOP
  • MEMBER
  • 2006 BUICK LA CROSSE
  • 182,000 MILES
The OBD port is getting no power. The fuse for the cigarette lighters is still good.
Sunday, August 12th, 2018 AT 2:19 PM

10 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon.

The DLC is powered by its own fuse in the inside fuse block in the car. Check for the fuse block on the end of the dash when you open the door. You have to pull off a cover.

I attached a wiring diagram for you to view on what it says for the fuse.

What concerns me is why it failed. Fuses blow for a reason. If you do not find the reason it will continue to fail.

Roy
Image (Click to make bigger)
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
-2
Sunday, August 12th, 2018 AT 3:32 PM
Tiny
DENALIWONTSTOP
  • MEMBER
  • 6 POSTS
I have a different diagram for the fuse box on the end of the dash for a 2006 Buick LaCrosse.
Was this
answer
helpful?
Yes
No
-1
Monday, August 13th, 2018 AT 2:59 AM
Tiny
DENALIWONTSTOP
  • MEMBER
  • 6 POSTS
I attached pictures of the diagram and the fuse box. Thank you.
Images (Click to make bigger)
Thumb
Thumb
Was this
answer
helpful?
Yes
No
+1
Monday, August 13th, 2018 AT 3:01 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Did you use a test light and verify power to fuses and power on both sides of the fuses?

Roy
Was this
answer
helpful?
Yes
No
+1
Monday, August 13th, 2018 AT 3:23 AM
Tiny
DENALIWONTSTOP
  • MEMBER
  • 6 POSTS
Yes sir, even put a new one in it.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Monday, August 13th, 2018 AT 3:35 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
New one in what? Did you check for power on pin 16 of the DLC?
Image (Click to make bigger)
Thumb
Was this
answer
helpful?
Yes
No
+2
Monday, August 13th, 2018 AT 3:39 AM
Tiny
DENALIWONTSTOP
  • MEMBER
  • 6 POSTS
New fuse under the hood and yes sir.
Was this
answer
helpful?
Yes
No
Monday, August 13th, 2018 AT 3:54 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
The fuse is not under the hood it is in the interior fuse block as listed.

Did you verify power on all the fuses on both sides?

Roy
Was this
answer
helpful?
Yes
No
+1
Monday, August 13th, 2018 AT 3:58 AM
Tiny
DENALIWONTSTOP
  • MEMBER
  • 6 POSTS
I changed the cigarette lighter fuse under the hood, but I do not have the DLC fuse on the diagram.
Was this
answer
helpful?
Yes
No
Monday, August 13th, 2018 AT 6:51 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Again, the cigarette lighter fuse is not the fuse.

It is the OnStar fuse in the interior fuse block as indicated in the diagram.

If you have power on both sides then you have a wiring issue between the fuse block and the DLC.

Roy
Was this
answer
helpful?
Yes
No
+4
Monday, August 13th, 2018 AT 7:53 AM

Please login or register to post a reply.

Related Engine Low Power Content

Fix an Engine with Low Power!
VIDEO
Fix an Engine with Low Power!
Instructional repair video
Symptoms of Low Engine Power
GUIDE
Symptoms of Low Engine Power
The power your car's engine is producing is important. When you step on the gas you need your car to accelerate, mainly to keep you out of trouble when getting onto the...
VIEW MORE

Sponsored links